1. Direction can be adjusted by adjusting R/L during use.
2. Inner hexagon reinforcement, more stable connection, not easy to slip.
3. The ratchet device is easy to disassemble, and can quickly disassemble and install screws by positive and negative rotation,which is convenient and fast.
4. A variety of specifications of the batch, the use of a wider range of functions.
5. Equipped with long rod, can be combined into one, more convenient to use, more widely used.